Sound-scattering spectra of steelhead (Oncorhynchus mykiss), coho (O. kisutch), and Chinook (O. tshawytscha) salmonids

Josiah S. Renfree; Sean A. Hayes; David A. Demer

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Sound-scattering spectra of steelhead (Oncorhynchus mykiss), coho (O. kisutch), and Chinook (O. tshawytscha) salmonids

机译：硬头鲑（Oncorhynchus mykiss），银鳕（O. kisutch）和奇努克（O. tshawytscha）鲑鱼的声散射光谱

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摘要

A recently developed method for measuring total target strength (TTS) allows calculation of the absolute scattered energy from fish over a broad-bandwidth signal. This technique uses the ratio of coherent and incoherent sound fields reflected off fish swimming in tanks. In stark contrast to other acoustic methods, this technique works best in reverberant conditions, is self-calibrating, and conveniently provides measurements of sound-scattering spectra for possible target identification. It has been used to successfully characterize the scattering spectra of marine life such as anchovy, sardine, and krill. In this experiment, the broad-bandwidth scattering spectra are characterized for the salmonids steelhead (Oncorhynchus mykiss), coho (Oncorhynchus kisutch), and Chinook (Oncorhynchus tshawytscha). The TTS measurements demonstrate that the scattering spectra for these species are similar, yet discernible. These unique scattering spectra may provide means for acoustically identifying and enumerating such targets in rivers or streams. Having effective acoustic methods for assessing salmon abundance could become a major addition to currently available measurement tools and provide a new, low-impact assessment technique for both commercial and endangered populations.

机译：最近开发的一种用于测量总目标强度（TTS）的方法可以计算出鱼类在宽带信号上的绝对散射能量。该技术使用了鱼缸中游泳时反射的相干声场和非相干声场的比率。与其他声学方法形成鲜明对比的是，该技术在混响条件下效果最佳，具有自校准功能，并且可以方便地提供声散射光谱的测量结果，以用于可能的目标识别。它已被用于成功表征海洋生物如as鱼，沙丁鱼和磷虾的散射光谱。在此实验中，对鲑鱼类硬头鱼（Oncorhynchus mykiss），银鳕鱼（Oncorhynchus kisutch）和奇努克族（Chinook）（Oncorhynchus tshawytscha）的宽带散射光谱进行了表征。 TTS测量表明，这些物质的散射光谱相似，但可辨别。这些独特的散射光谱可以提供用于声学识别和枚举河流或溪流中此类目标的手段。拥有有效的声学方法来评估鲑鱼丰度可能会成为当前可用测量工具的重要补充，并为商业和濒危人群提供一种新的，低影响的评估技术。

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来源
《ICES Journal of Marine Science》 |2009年第6期|1091-1099|共9页
作者
Josiah S. Renfree; Sean A. Hayes; David A. Demer;
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作者单位

Southwest Fisheries Science Center, 8604 La Jolla Shores Drive, La Jolla, CA 92037, USA;

Southwest Fisheries Science Center, 8604 La Jolla Shores Drive, La Jolla, CA 92037, USA;

Southwest Fisheries Science Center, 8604 La Jolla Shores Drive, La Jolla, CA 92037, USA;

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正文语种 eng
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关键词
broad bandwidth; remote identification; riverine; salmon; smolt detection; total target strength;

机译：宽带宽;远程识别;河边;三文鱼;s检测;总目标强度;

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2. Defining marine habitat of juvenile Chinook salmon, Oncorhynchus tshawytscha, and coho salmon, O. kisutch, in the northern California Current System [J] . Suzan S. Pool, Douglas C. Reese, Richard D. Brodeur Environmental Biology of Fishes . 2012,第2期

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5. Counting on their migration home: An examination of monitoring protocols and Saanich First Nations' perspectives of coho (Oncorhynchus kisutch), chinook (O. tshawytscha) and chum (O. keta) Pacific salmon at Goldstream River and Saanich Inlet, Southern Vancouver Island, British Columbia. [D] . Paul, Roxanne. 2007

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8. Thermal Resistance of Adult Coho (Oncorhynchus Kisutch) and Jack Chinook (O. Tshawytscha) Salmon,and Adult Steelhead Trout (Salmo Gairdneri) from the Columbia River. [R] . coutant,charles c. 1971

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Sound-scattering spectra of steelhead (Oncorhynchus mykiss), coho (O. kisutch), and Chinook (O. tshawytscha) salmonids

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